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                            系統數據庫 information\_schema存儲著所有的數據庫的相關信息
![](https://img.kancloud.cn/cb/6f/cb6f7fd2113f18afdad8f7b68e3599a7_782x506.png)
例：
```
select schema_name from information_schema.schemata;

select table_name from information_schema.schemata where table_schema = 'zzcms'; 

select column_name from information_schema.columns where table_schema = 'zzcms' and 'table_name' = 'zzcms_zx';
```
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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